Thimble whistle



Sept. 14, 1937. M. E TRQ'LLEN I 2,092,942

THIMBLE WHI STLE Filed March 22, 1935 Patented Sept. 14, 1937 zayii'" UNITED STATES THIIWBLE WHISTLE Martin E. Trollen, St. Paul, Minn., assignor to Brown & Bigelow, St. Paul, Minn., a corporation of Minnesota Application March 22, 1935, Serial No. 12,432

1 Claim. (01. 46-179) This invention relates to a whistle wherein the body portion of the same is made in the form of a thimble. This whistle is designed to make a siren-like sound when air is forced through the same.

A feature resides in providing a whistle having a tubular body portion with a series of annular ribs formed therein which provide reinforcing.

in the body, as well as grooves which permit the Whistle to be held more easily in the mouth of the operator.

A further feature of my whistle resides in its simple construction wherein the open end is flared outwardly and provided with an annular reinforcing head around the same. The other end is formed with an integral inset transverse wall providing a reinforced annular flange about the same. This gives rigidity to the other end which carries the wall and the wall provides a support for the vaned rotor of the whistle. The wall which carries the rotor is perforated so that air may be blown against the vanes of the rotor causing the same to spin in the operation of the whistle.

The whistle is designed to provide a means of advertising having a space in the flared end. upon which advertising may be embossed in any desired decorative manner, and thus a toy whistle may be made having a utility of forming an amusement for children as well as displaying advertising matter or other display indicia. The rotor is inclosed and protected by the reinforced structure of the inset end, wall and the whistle is of a design and character which makes it desirable to give to children for amusement.

In the drawing forming part of this specification:

Figure 1 illustrates a perspective view of my whistle.

Figure 2 is a vertical cross-section in elevation.

Figure 3 is a top view of the same.

Figure 4 illustrates the rotor removed from the whistle.

The whistle A may be made of any suitable material and is formed with a thimble-like body portion l0 having a cylindrical part II in which a series of annular reinforcing grooves l2 are formed.

The open end I3 is formed by flaring the side wall outwardly at I4 and a reinforcing bead I5 is formed about the open end I3.

The flared portion l4 may be embossed with lettering or indicia Hi to add to the utility of the whistle A as well as the attractiveness thereof. In forming the embossed indicia IS the background I! about this indicia may be colored by enamel or other suitable material of different shades.

An inset transverse wall I8 is formed in the cylindrical portion ll opposite the open end l3. The wall I8 is integral with the body l0 and in forming the same as illustrated in Figure 2, an integral annular reinforcing flange I9 is formed about the wall Ill.

The wall [8 is formed with perforations 20 to permit air to be blown through the same.

A disc rotor B is adapted to be held by the rivet 2| in a manner to permit it to spin freely when air is blown through the openings 20 against the same. A series of air vane pockets 22 are formed in the rotor disc B which have an air escapement opening 23 along one edge and at the bottom of the pockets 22.

The Whistle A is formed to provide a desirable and practical toy to give to children, having in mind a construction wherein there will be no sharp edges or parts on which a child might become injured in carrying the same in the mouth while operating the whistle. The body is of an elongated tubular nature and'the ribs I2 form a means which permit the child to engage the whistle with the lips and teeth so that it will not easily slip into the throat. Further, the rotor B is within the body of the whistle and is protected by the reinforcing flange l9 so that the whistle will stand considerable abuse withv out affecting its operation. Further, the flared end does not only provide a means of carrying display indicia, but also acts as an enlarged portion to prevent the whistle from easily slipping into the childs mouth.

The whistle is operated by blowing upon the end carrying the wall [8 which causes air to pass through the openings 20 into the vane pockets 22, causing the rotor B to operate rapidly while the rush of air through the same whirls in the ribbed chamber 0 and out of the opening I 3, giving a whistle sound in the nature of a siren. The character of the sound can be varied in accordance with the formation of the pockets 22 or such other design of vanes as may be desirable formed upon or in the rotor B.

My whistle is of a simple design and it may be made within the scope of the following claim with such variations as may be readily apparent to those skilled in the art.

I claim:

A thimble whistle including an outer wall comprising a cylindrical shell portion and an integral outwardly flaring shell portion, an annular bead at the outer end of said outwardly fiaring portion, spaced annular grooves in said cylindrical shell portion, the end of said cylindrical shell portion at the opposite end of said wall from said bead being folded back upon itself to form an internal reinforcing portion, said reinforcing portion terminating in a transverse end wall spaced by said reinforcing portion from the end of the outer wall, said end wall having angularly spaced openings therethrough, a rotor centrally pivoted to said end wall, and pockets formed on said disc to change the direction of air blown through said openings in said end wall to cause rotation of said rotor when air is blown through said openings.

MARTIN E. TROLLEN. 

